Jacobsen LF 3400, Kubota V1305-E, 5 Gang, 2WD User Manual (English)

Questions and Answers:

B
Brett DanielAug 20, 2025
Why Jacobsen Lawn Mower engine will not start?
- B
  Brenda SandersAug 20, 2025
  If your Jacobsen Lawn Mower's engine won't start, here are a few things to check: * Verify the interlock system and start-up procedure. * Reset the ignition switch and allow the glow plug to time out before cranking the engine. * Inspect the condition of the battery and battery connections. * Ensure you're using fresh fuel, and consider changing the fuel filter and bleeding the fuel lines. * Replace the fuse. * Test and replace the relay, if necessary. * Adjust or replace the switch.
A
Angela PattonAug 25, 2025
Why my Jacobsen LF 3400, Kubota V1305-E, 5 Gang, 2WD Lawn Mower engine will not start?
- M
  Madison SalazarAug 25, 2025
  If your Jacobsen Lawn Mower engine won't start, make sure the parking brake is engaged, the traction pedal is in neutral, and the mow switch is off. Check the interlock system and follow the correct start-up procedure. Also, ensure the glow plug has timed out by resetting the ignition switch. Inspect the battery and its connections, and fill the fuel tank with fresh fuel, changing the fuel filter if necessary. Check and bleed the fuel lines. Replace any blown fuses, test and replace any defective relays and adjust or replace the neutral switch on the traction pedal if it's out of adjustment or defective.
D
Diana TurnerAug 26, 2025
What to do if Jacobsen Lawn Mower engine overheating?
- T
  Timothy BaileyAug 26, 2025
  If your Jacobsen Lawn Mower engine is overheating: * Inspect and add coolant. * Clean the air intake at the radiator. * Tighten or replace the belt.
C
Christopher FloresAug 28, 2025
How to fix Jacobsen Lawn Mower engine hard to start?
- P
  paul22Aug 28, 2025
  If your Jacobsen Lawn Mower engine is hard to start or runs poorly: * Fill with fresh fuel. Change the fuel filter. Bleed the fuel lines. * Inspect and replace the air filter.
M
Michael DuncanAug 29, 2025
What to do if my Jacobsen LF 3400, Kubota V1305-E, 5 Gang, 2WD Lawn Mower engine is overheating?
- H
  heatherdickersonAug 30, 2025
  If your Jacobsen Lawn Mower engine is overheating, it could be due to several reasons. First, check the coolant level and add coolant if it's low. Second, ensure that the air intake at the radiator is not restricted and clean it if necessary. Lastly, inspect the water pump belt; if it's broken or loose, tighten or replace it.
C
Cory WrightAug 31, 2025
What to do if Jacobsen LF 3400, Kubota V1305-E, 5 Gang, 2WD Lawn Mower battery is not holding charge?
- D
  Deanna HardingAug 31, 2025
  If the battery of your Jacobsen Lawn Mower isn't holding a charge and the battery light is on, start by inspecting and cleaning any loose or corroded battery terminals. Next, check the electrolyte level and refill it to the correct level if it's low. Also, examine the alternator belt for looseness or breakage, and tighten or replace it as needed. If these steps don't resolve the issue, the charging system may be defective, and you should consult the engine manual for further guidance.
J
Joshua JacksonSep 2, 2025
Why does my Jacobsen LF 3400, Kubota V1305-E, 5 Gang, 2WD Lawn Mower engine keep stopping?
- A
  Annette JenningsSep 2, 2025
  If your Jacobsen Lawn Mower engine stops, it could be due to an empty fuel tank; refill it with fresh fuel and bleed the fuel lines. Alternatively, the interlocks may not be set before you leave the operator’s seat; engage the parking brake and set the mow switch to OFF.
L
Lucas BassSep 4, 2025
Why is my Jacobsen Lawn Mower engine overheating?
- C
  catherine37Sep 4, 2025
  Your Jacobsen Lawn Mower engine might be overheating due to a low coolant level. Inspect and add coolant as needed. Also, check for any restrictions in the air intake at the radiator and clean it. A broken or loose water pump belt can also cause overheating, so tighten or replace the belt.
L
Lisa BowenSep 6, 2025
What to do if my Jacobsen Lawn Mower engine is hard to start or runs poorly?
- L
  Lisa HayesSep 6, 2025
  If your Jacobsen Lawn Mower engine is hard to start or runs poorly, start by filling the tank with fresh fuel and changing the fuel filter if it's dirty. Bleed the fuel lines. Inspect and replace the air filter if it's dirty. For issues with the injectors or fuel pump, or if you suspect a more complex engine problem, consult the engine manual.
A
Anthony CunninghamSep 8, 2025
What to do if my Jacobsen LF 3400, Kubota V1305-E, 5 Gang, 2WD engine stops?
- M
  Marcia BowmanSep 8, 2025
  If the Jacobsen Lawn Mower engine stops, refill with fresh fuel and bleed the fuel lines. Also, make sure all interlocks are properly set before leaving the operator’s seat by engaging the parking brake and setting the mow switch to OFF.

Jacobsen LF 3400, Kubota V1305-E, 5 Gang, 2WD Specifications

General

Category	Lawn Mower
Manufacturer	Jacobsen
Model	LF 3400
Engine Manufacturer	Kubota
Engine Model	V1305-E
Number of Blades	5
Drive Type	2WD

Summary

SAFETY

OPERATING SAFETY

Guidelines for safe operation, user responsibilities, and precautions during use and maintenance.

IMPORTANT SAFETY NOTES

Key hazard warnings, interlock system operation, and pre-operation checks.

SPECIFICATIONS

PRODUCT IDENTIFICATION

Details on model numbers, serial number plate, and specifications for different units.

V1305-E ENGINE

Technical specifications for the Kubota V1305-E engine, including power and capacity.

V1505-E ENGINE

Technical specifications for the Kubota V1505-E engine, including power and capacity.

V1505-TE ENGINE

Technical specifications for the Kubota V1505-TE engine, including power and capacity.

TRACTOR

Specifications for the tractor's tires, battery, brakes, speed, and hydraulic system.

WEIGHTS AND DIMENSIONS

Physical dimensions and weight specifications for LF 3400 and LF 3800 models.

LF 3400, LF3400 Turbo Cutting Units

Specifications for cutting units, including width, reels, blades, and height of cut.

LF 3407, LF 3800, LF 3800 Turbo Cutting Units

Specifications for cutting units, including width, reels, blades, and frequency of cut.

ACCESSORIES

List of available tractor and reel accessories with part numbers.

SUPPORT LITERATURE

Information on obtaining additional manuals, videos, and catalogs.

ADJUSTMENTS

GENERAL

General guidelines for performing adjustments and maintenance, including safety precautions.

BEDKNIFE-TO-REEL (Pre-adjustment Check)

Procedure for checking reel bearings and bedknife condition before adjusting.

BEDKNIFE ADJUSTMENT

Detailed steps for adjusting the bedknife-to-reel gap on different reel sizes.

CUTTING HEIGHT

Instructions for setting the machine's cutting height using the gauge and adjustment screws.

FLASH ATTACH

Procedure for installing and removing cutting units, including motor and spring pin assembly.

DOWN PRESSURE

How to adjust down pressure for optimal cutting quality by setting spring dimensions.

MOW SPEED

Procedure for adjusting the mowing speed for optimal cutting quality.

BELT

Instructions for inspecting and adjusting belt tension on the alternator pulley.

BRAKES

Steps for adjusting the tractor's brake system after component replacement or wear.

NEUTRAL ADJUSTMENT

Procedure for adjusting the neutral position of the drive pump and related switches.

FORWARD / REVERSE SPEED

How to adjust forward and reverse travel speeds using the traction pedal linkage.

FRONT REEL LIMIT SWITCH

Procedure for adjusting the proximity switches that control reel operation when lifted.

STEERING TOE-IN

Steps for adjusting the steering toe-in and ensuring proper clearance for the steering cylinder.

TORQUE SPECIFICATION

Charts providing torque values for American and Metric fasteners used on the machine.

MAINTENANCE

GENERAL

General maintenance practices, including cleaning, lubrication, and part replacement.

ENGINE

Information on engine break-in, oil changes, and referencing the separate engine manual.

ENGINE OIL

Procedures for checking and changing engine oil, including recommended oil types and intervals.

AIR FILTER

Instructions for checking and replacing the air filter element, emphasizing not to clean it.

FUEL

Safety precautions and best practices for handling and fueling the machine.

FUEL SYSTEM

Guidance on changing the fuel filter and bleeding the fuel system.

BATTERY

Procedures for battery servicing, cleaning, and cable connection/disconnection.

JUMP STARTING

Step-by-step instructions for jump-starting the tractor using jumper cables.

CHARGING BATTERY

Guidelines for safely charging the tractor's battery, including ventilation and tool usage.

MUFFLER AND EXHAUST

Recommendations for inspecting and maintaining the exhaust system and muffler.

HYDRAULIC HOSES

Procedures for inspecting, replacing, and routing hydraulic hoses to prevent damage and contamination.

HYDRAULIC OIL

Instructions for draining, replacing, and purging air from the hydraulic system.

HYDRAULIC FILTERS

Guidance on replacing the charge and return line hydraulic filters when the warning light illuminates.

ELECTRICAL SYSTEM

General precautions for maintaining the electrical system, including connections and circuit protection.

RADIATOR

Instructions for checking coolant levels, cleaning fins, and maintaining the cooling system.

ROLLOVER PROTECTION STRUCTURE (ROPS)

Inspection and maintenance guidelines for ROPS if equipped on the tractor.

TIRES

Recommendations for maintaining proper tire inflation and checking tread wear.

WHEEL MOUNTING PROCEDURE

Steps for safely mounting wheels, including cleaning and torquing procedures.

CARE AND CLEANING

Procedures for washing, cleaning, and protecting the tractor and implements.

REEL BACKLAPPING

Detailed steps for performing reel backlapping to restore cutting edges.

STORAGE

Instructions for proper storage of the tractor, including battery, engine, and cutting units.

TROUBLESHOOTING

GENERAL

A chart listing common start-up and operation problems with possible causes and actions.

CONTROLLER LAMPS

Explanation of controller functions and indicator lamps for inputs and outputs.

ELECTRICAL CIRCUITS

Guidance on troubleshooting electrical circuits by checking controller lamps and individual components.

MAINTENANCE & LUBRICATION CHARTS

GENERAL

General lubrication practices, including cleaning fittings and using specified grease types.

MAINTENANCE CHART

Recommended service and lubrication intervals for various components of the machine.

LUBRICATION CHART

Diagrams and lists of grease fittings and lubrication points with recommended intervals.

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Jacobsen LF 3400, Kubota V1305-E, 5 Gang, 2WD User Manual

Table of Contents

Questions and Answers:

Jacobsen LF 3400, Kubota V1305-E, 5 Gang, 2WD Specifications

Summary

SAFETY

OPERATING SAFETY

IMPORTANT SAFETY NOTES

SPECIFICATIONS

PRODUCT IDENTIFICATION

V1305-E ENGINE

V1505-E ENGINE

V1505-TE ENGINE

TRACTOR

WEIGHTS AND DIMENSIONS

LF 3400, LF3400 Turbo Cutting Units

LF 3407, LF 3800, LF 3800 Turbo Cutting Units

ACCESSORIES

SUPPORT LITERATURE

ADJUSTMENTS

GENERAL

BEDKNIFE-TO-REEL (Pre-adjustment Check)

BEDKNIFE ADJUSTMENT

CUTTING HEIGHT

FLASH ATTACH

DOWN PRESSURE

MOW SPEED

BELT

BRAKES

NEUTRAL ADJUSTMENT

FORWARD / REVERSE SPEED

FRONT REEL LIMIT SWITCH

STEERING TOE-IN

TORQUE SPECIFICATION

MAINTENANCE

GENERAL

ENGINE

ENGINE OIL

AIR FILTER

FUEL

FUEL SYSTEM

BATTERY

JUMP STARTING

CHARGING BATTERY

MUFFLER AND EXHAUST

HYDRAULIC HOSES

HYDRAULIC OIL

HYDRAULIC FILTERS

ELECTRICAL SYSTEM

RADIATOR

ROLLOVER PROTECTION STRUCTURE (ROPS)

TIRES

WHEEL MOUNTING PROCEDURE

CARE AND CLEANING

REEL BACKLAPPING

STORAGE

TROUBLESHOOTING

GENERAL

CONTROLLER LAMPS

ELECTRICAL CIRCUITS

MAINTENANCE & LUBRICATION CHARTS

GENERAL

MAINTENANCE CHART

LUBRICATION CHART

Related product manuals